The purpose of this question is to see how well you can fit into a team. Basically, you should not have a problem with a person, although you can have a problem with the style of working.

So, to answer this question you can simply say, I understand that IT is about team work, so we can't afford to problems with co-workers but if someone is not serious about their work or does a low quality work affecting the whole project, I definitely do not like it.